I have an automatic 2006 wrangler x with a little over 60,000 miles and no mods.
I've had the transmission serviced and flushed, a reprogram done and spark plugs replaced and had the dealer supposedly check the TPS.
My jeep started jerking (about three months ago) all the time when it would shift from 1st to 2nd gear, I took it to a transmission shop and they reprogramed. It worked fine for about two days before it started jerking again. I took it to the dealership and they hooked it up and and no codes showed up. They serviced the transmission, I got better gas mileage but its still jerking from not only 1st to 2nd gear and occasionally from 2nd to 3rd. The hardest/roughest jerking is when the jeep is "cold" and the engine temp is below 210. The jeep is shifting as if a person who is new to driving a stick is driving and hasn't gotten the clutch to gas ratio "balanced" The dealership hasn't been able to "reproduce" the jerking when it shifts so they have about a dozen or so possibilities of what it could be.
I obviously don't know what it could be (partly because this is the first time a vehicle has done this type of behavior, I know very basic things about vehicle maintaince ) and the dealership has a bunch of different possibilities like I stated before. input or ideas of what it could be would be appreciated. Thanks

I did post the same thing a few weeks ago but I figured maybe some new eyes would see and might know what the problem could possibly be.